from manimlib import *
from numpy import square
import numpy as np

class Test(Scene):
    #75cfb8
    #浅绿
    #bbdfc8
    #浅黄
    #f0e5d8
    #深黄
    #ffc478
    def construct(self):
        # self.add(NumberPlane()) 
        # ,,,
        m=Tex(r'\lim _{x \rightarrow 0} \frac{1}{x} \ln \frac{e^{x}+e^{2 x}+e^{3 x}+\cdots+e^{n x}}{n}=9',color=BLACK).shift(UP)
        n=Tex('n=?',color=BLACK).shift(DOWN)
        self.add(m,n)
        self.wait(0.03)
